CVE catalog
CVE-2026-12773
A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the componen
- Severity
- High · CVSS 7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.02% · Oct 25, 2026
A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | litellm | Not reported | 1.59.9 | fixed |
| PyPI | litellm | Not reported | 1.84.0 | fixed |
| PyPI | litellm | Not reported | 1.84.0 | fixed |
| Cpe | litellm | Not reported | 1.59.9 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | litellm | cpe | Not reported | 1.59.9 | Not reported | Not reported | Not reported |
| PyPI | litellm | PyPI | Not reported | 1.84.0 | Not reported | GHSA-4JCJ-7X88-M979 | Not reported |
| PyPI | litellm | PyPI | Not reported | 1.84.0 | Not reported | PYSEC-2026-4067 | Not reported |
| Cpe | litellm | cpe | Not reported | 1.59.9 | Not reported | NVD-CVE-2026-12773 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/security/cve/CVE-2026-12773]
- [https://bugzilla.redhat.com/show_bug.cgi?id=2491112]
- [https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-12773]
- [https://osv.dev/vulnerability/PYSEC-2026-4067]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12773.json]
- [https://vuldb.com/cve/CVE-2026-12773]
- [https://vuldb.com/submit/811282]
- [https://vuldb.com/vuln/372515]
- [https://vuldb.com/vuln/372515/cti]
[FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]